The target mineralised monazite vein strikes eastwest across the Steenkampskraal Mining Right area and morphologically is a thin lenticular body, which in three dimensions, appears as a steplike intrusion with dips varying from almost horizontal to 70° as the horizon "steps downwards" in a southerly direction.
The Cogne serpentinitehosted magnetite ore: a subseafloor hydrothermal deposit? candidate: Luca Toffolo, II course ... like veins crosscutting antigoriteserpentinites or with acicular crystals of pure diopside as impregnations ... (2014) described a similar texture in serpentinites from the Western Alps and they explained this as a ...
The Merensky reef contains 80% of the world's Platinum. The origins of the BIC are poorly understood but field mapping and seismic reflection surveys reveal the intrusion is similar to a lopolith (an intrusion with a relatively flat top and curved bottom).
sulphide veins, related to repeated porphyry emplacement, in which host sulphide ore commonly postdates quartz vein formation (Copper Hill). The host dilatant structural settings also facilitate the evolution of ore fluids from magmatic source rocks at depth to apophyses, commonly within dilatant sheeted quartzsulphide veins.
Intrusion related contact metamorphism has led to the pervasive conversion of country rocks into biotite hornfels. Distribution of biotite is complex due to an overlying layer of hydrothermal biotite alteration and overprinting of propylitic alteration assemblages.
Intrusionrelated gold systems constitute containing at least 30 tonnes of gold known to exist in orogenic belts (Lang and Baker, 2001). In spite of the dearth of geological evidence, structural and spatial constraints strongly suggest that the M'popo deposit are not orogenic in character. In other words, it was not formed synchronously with regional
The currently popular assignment of most gold‐rich veins to the orogenic category requires caution, because of the geological convergence that they show with some intrusion‐related deposits. A proper distinction between intrusion‐related and orogenic gold deposits is crucial for exploration planning.
Intrusionrelated metallogenic provinces with distinctive metal associations are distributed, largely in accord with classical redoxsensitive graniteseries. Copper, Au and Fe mineralisation are associated with magnetiteseries plutons and tungsten mineralisation associated with ilmeniteseries plutons.
The main emplacement events related to the mineralization in the Pobei complex, are the magnetitemineralized gabbro related to the Xiaochangshan Fe deposit, the gabbro intrusion associated to the Poyi, Poshi and Podong CuNi deposits, and the ultramafic intrusions that .
Apr 26, 2015· Mineralization: Sheeted quartz vein, stockwork quartz vein, disseminated and skarn, all of which are genetically related to a relatively small (3 X km in outcrop) composite intrusion of predominantly monzonitic composition, with a monzodioritic to dioritic rind (Cadia Hill Monzonite). The Cadia .
The Timbarra gold deposits, located in the southern New England Fold Belt of New South Wales, Australia, represent an economically significant and distinctive member of the intrusionrelated class of gold deposits. The five known deposits possess a total identified mineral resource of Mt at g/t gold, for a total of 396,800 contained ounces.
Bell Copper Corp Focuses on the Exploration and Discovery of Large Copper Deposits Located in a Region Responsible for 10% of the World's Copper Production: Arizona.
CopperGold Bearing Skarn Mineralization at the Batu Hijau Deposit, Sumbawa Island, Indonesia (M. T. Aye et al.) 195 Figure 3. Photograph showing the typical features of skarn: (a) banded nature of pyroxene and garnet, (b) quartz vein across cutting the pyroxene abundance skarn, (c) quartz calcite vein which includes ore mineraliza
IRGS NQ The INTRUSIONRELATED CLAN IntrusionRelated Gold Deposit (IRGD) A deposit spatially and temporally related to an intrusion where Au (Ag) is the only commodity IntrusionRelated Gold System (IRGS) The area of intrusions and hydrothermal features (alteration, breccias, mineralisation) that may enclose a deposit IntrusionRelated Mineral ...
Desulfidation of hydrothermal fluids by Febearing minerals in the wallrock triggered the main gold precipitation phase. The major and trace element composition of oreforming fluids from the mineralized vein, barren and granitic intrusion is still largely unknown, yet could provide important and more direct evidence for the fluid source(s).
Steve Garwin, 2002. "The Geologic Setting of IntrusionRelated Hydrothermal Systems near the Batu Hijau Porphyry CopperGold Deposit, Sumbawa, Indonesia", Integrated Methods for Discovery: Global Exploration in the TwentyFirst Century, Richard J. Goldfarb, Richard L. Nielsen